In the meanwhile, the USCIS and many advocates suggest that prospective applicants for DAPA start gathering together documentation, including:
Evidence of identity;
Evidence of a relationship to a US Citizen or permanent resident;
Evidence of five years of continuous residence in the United States.
Immigration advocates caution that, like the Deferred Action for Childhood Arrivals program, DAPA is a program that can be terminated by a future Presidential Administration or changed by Congressional legislative action. So anyone seeking status under DAPA (or DACA) should also review eligibility for other, more permanent, ways to adjust status.
In the meanwhile, have hope!